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At 500K the Equilibrium constant, Kp for the reaction is 4.24E-10. R=.08206 what is the value of Kc for the reaction COCL2=CO +CL2
Why are homopolymers of polyethylene and isotactic polypropylene rigid plastics, but ethylene-propylene (EPR) copolymer soft
How many aluminum cans would you have to collect to earn $300 if each can weighs 18.75 g and Al is worth $800 per ton
it was observed that electrons were released with a kinetic energyke of 3.50times 10-19 joules when a metal was exposed
If a sample of 0.230 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
John takes 3 hours longer than Andrew to peel 500 lb of apples. If together they can peel 500 lb of apples in 8 hours, then how longer would it take each one working alone?
The "roasting" of 48.7 g of ZnS at constant pressure gives off 220. kJ of heat. Calculate the DH for this reaction. 2ZnS(s) + 3O2(g) ® 2ZnO(s) + 2SO2(g)c
A weak acid with the general formula of HA will react with a base, such as NaOH. Write the neutralization equation which describes the reaction.
In the one that minimizes the formal charge, how many double bonds does the chlorine atom make? How many double bonds does each N2O5 resonance structures have
how does the average kinetic energy of different gases compare when they are at the same temperature?
What mass of CaCO3 will produce 8.0 L of CO2, measured at standard temperature and pressure conditions? Molar mass of CaCO3 = 100. g per mole.
Given: H-H bond energy = 435 kJ, Cl-Cl bond energy = 243 kJ, and the standard heat of formation of HCl(g) is -92 kJ/mol, calculate the H-Cl bond energy.
a toothpaste contains 0.24% by mass sodium fluoride to prevent dental cavaties. One tube contains 119g of toothpaste. How many moles of NaF are in the tube of toothpaste.
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